255402551 has 2 divisors, whose sum is σ = 255402552. Its totient is φ = 255402550.

The previous prime is 255402529. The next prime is 255402599. The reversal of 255402551 is 155204552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 255402551 - 2¹⁴ = 255386167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255402451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127701275 + 127701276.

It is an arithmetic number, because the mean of its divisors is an integer number (127701276).

Almost surely, 2^255402551 is an apocalyptic number.

255402551 is a deficient number, since it is larger than the sum of its proper divisors (1).

255402551 is an equidigital number, since it uses as much as digits as its factorization.

255402551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10000, while the sum is 29.

The square root of 255402551 is about 15981.3188129140. The cubic root of 255402551 is about 634.4660822927.

The spelling of 255402551 in words is "two hundred fifty-five million, four hundred two thousand, five hundred fifty-one".